516 ZOOPHYTA. CORALIANADA^ LoBtrLAHiA. 
towards the tip become alternate ; they are clavate with rough ends.— M- 
Lamouroux has strangely confounded his Alcyonium lobatum and the A. exos 
of Dr Spix with this species. With every allowance for the discrepancy 
which may prevail among the representations of the same animal examined 
under different circumstances, by unconnected observers, it is : possible to 
admit that the figures given by Ellis, which have been referred t ; asi 1 tl-ose 
communicated by the above named observers, can have been take i d;om in- 
dividuals of the same species. The tentacula in Ellis’s figures dsil having 
compared these with nature we can pronounce on their accumcy) are pi nnate 
and pointed. In the Alcyonium exos of Dr Spix (Amiai'.s du Mus. 
t. xxxiii, f. 7-) the tentacula are subclavate, blunt, and vilL'US ; while in the 
A. lobatum of M. Lamouroux (Hist. Cor. 336. t. xiii. B, C, H ) they are subcy- 
lindrical, rounded at the extremity, and covered above ard on (he marehi 
with blunt tubercles. In our examination of several speeds’ "’*oin p- 
ent parts of the coast, \ arvingin form and colour, we ' m. c 
the species figured by JEllis. it is probable, however, ' .d " o .■ na v 
be detected in our seas. 
Gen. XXXVIII. CYDONIUMl^A coriaceous'Vi »^5 inter- 
nally carneous, with numerous straight ridged sp? a, per- 
pendicular to the surface ; polypi with a cen ai opening, 
and an orifice at the base of each of the eight niiated ten- 
tacula. 
84;. C. Mulleri. Skin yellowish, with r iin' Ous stellate 
pores ; internally brown. 
A. cydonium. Mull. Zool. Dan. t. 81. f. 3, 4, 5. Meim 
i. 563 — Zetland. 
Base of adhesion narrow, body massive, surface irregular ; skin consist' s 
of animal matter cementing innumerable round siliceous grain the ceils le?; slid- 
ing from the stellate pores are indistinct ; the spicula, which eH’erge to’ - wards 
the centre, are fusiform, grouped in small bundles, and man cf at the 
skin are tricuspidate. In a dried specimen from Zetland, #.alcn I have had 
an opportunity of examining through the kindness of Professor Jameson, the 
surface is slightly villous, owing probably to the contraction of the skin, leav® 
ing the extremities of the fibres free. With the exception of the stellate pores, 
it agrees with the Alcyonium 'primum Dioscoridis of Donati (Adriat. 56. t. ix. 
f. i.) ill' the villous skin and the simple and tricuspidate spicula. 
Gen. XXXIX. CLIONA. — Substance fleshy, irritable, with 
siliceous spicula ; imbedded in cavities of shells and protrud- 
ing tubular contractile papillae, on the margin of which 
are placed cylindrical polypi, with 8 tentacula. 
85. C, celata . — Flesh yellow, spicula cylindrical, tubular, 
closed, slightly curved, pointed at one end, and terminated by 
a small hollow round head at the other. 
Grant., New Edin. Phil. Journ.— In old shells, especially oysters, com- 
mon. 
Perforations circular, leading into unconnected cavities, filled with the 
fleshy matter ; the tubular papillje project through the circular perforations. 
